In the op post there was a question about boa's but pythons are also mentioned. If your talking Amazon Tree boa, garden phase is the more brownish/ gray colored snake. Halloween phase can have multi colors. While these may be super bright in infants, not all colors in boa's stay that bright as they grow.
Something you should know is that the Amazon Tree Boa is not much like a Ball Python. while some people do get them to a tame state and handle them for the most part they have a naughty disposition, or can have. I have two, they are beautiful and I love them but I don't take them out and snuggle with them like I do my Ball Pythons who can be real sweet and lovey dovey.
Most people who have A.T.B.'s love their attitude, including myself. They are, like I said, beautiful snakes. Just different from a Ball Python, generally.